Fumigator.



'No.`723,5l3. P ATENTBD MAR. 24, 1903.

' G. E. BROWN.

PUMIGATOR.

APrLzoATIoN H LBD MAY 21', woz.

, No MODEL.

UNITED STATES:

PATENT OFFICE.

GEORGE EDMAN BROWN, OF SELMA, CALIFORNIA, ASS'IGNOR OF ONE-HALF TO JACOB H. WRIGHT, OF SELMA, CALIFORNIA.y

FUMIGATOR.

SPECIFICATION forming part of Lntrsratent No. 723,513, dated March 24,1903.

Application iiled May 21, 1902. Serial No.108.350. (No modelJ To all whom t may concern.:

Be it known that I, GEORGE EDMAN BROWN, a citizen of the United States, residing at Selma, in the county of Fresno and State of erator, so that the apparatus may be conven- 2o iently handled in transportation from one place to another with the several parts located in position for convenient manipulation and adjustment to force the fumes from the generator into the holes, borrows, and the 2 5 like.

With these and other objects in view the present inventionl consists in the com bination and arrangement of parts, as will be hereinvafter more fully described, shown in the accompanying drawings,and particularly pointed out in the appended claims, it being linder- `stood that changes in the form, proportion, size, and minor details may be made within the scope of the claims without departing from the spirit or sacrificing any of the advantages of the invention.

In the drawings, Figure 1 is a side elevation of a fumigator constructed and arranged in accordance with the present invention. Fig. 2 is a longitudinal sectional view thereof. Fig. 3 is a rear elevation of the device.

Like characters of reference designate corresponding parts in all the figures of the drawings.

In carrying out the present invention'there is provided a generating-chamber 1, preferably in the form of a sheet-metal cylinder,

which is closed at its front end and provided at its rear end with a door 2 to give access to 5o the interior of the chamber for the introduction of fuel and such material as maybe employed to give o ff fumes-as, for instance, sulfu r. This generator is supported by front and rear leg standards 3 and 4;, respectively, each of which is formed from a metal strap orband, whichvhas its intermediate portion iitted and secured to the bottom of the generator, with its opposite portions bent downwardly and then upwardly to form the opposite legs, the opposite end portions of theleg- 6o standard 4 being extended a suitable distance above the generator, so as to form braces or standards 5 for the support of the rear end of a bellows 6.

At the front of the generator and piercing the top thereof there is asmoke or fume pipe 7, which is provided in its upper end with a T-coupling S, which receives the discharge end of the bellows and forms a support therefor. Y 7o The bellows is arranged with its inlet upon the lower side of the bellows, and this inlet is in communication with the interior of the generating-chamber vthrough the medium of a substantially horizontal pipe 9, which is connected to a lateral rearwardly-directed y nipple 10 on the short pipe 7, while its rear end, which is terminated short of the standards 5, is provided with an inverted-T-coupling l1, which is in turn connected to a nip- 8o ple 12, carried by a plate 13, secured to the under side of the bellows and embracing the inlet thereof, so that the fumes and smoke may be drawn through the pipes 7 and 9 and the couplings 11 and 12 into the bellows, from 85 which they are discharged through the forward end of the T-coupling 8.

To prevent the fumes from being withdrawn into the bellows after they have been discharged therefrom, there is provided a valve 9o comprising an open-ended tubular nipple or casing 14, which is fitted to the outer end of the T-coupling 8, and within which is a forwardly-tapered tubular nozzlevl, which projects' beyond the forward end of the casing 95 14 and is provided with a beveled outer end that is normally closed by-a flap-valve 16,"` hinged to the upper side of the nozzle and normally lying against the beveled end of the nozzle. A tubular coupling 17 is fitted to the Ioo outer end of the valve-casing 14 and is provided with a reduced outer terminal to which a exible conducting-pipe 18 is connected, this pipe being of any suitable length, so as to carry the fumes to the desired point of application.

From the foregoing description it will be seen that the bellows is mounted upon the top ofthe generating-chamber l, and the pipe for carrying oft' the fumesis also connected to the4 chamber and all of the parts are compactly assembled, so that they are all conveniently accessible for adjustment and repairs, and the device may be conveniently transported without taking it apart, and it is always in readiness for use.

In the operation of the device a fire is built. in the fire-box and sulfur or other suitable material is introduced into the door 2, so as to give olf fumes through the discharge-pipe 7. The apparatus is of course placed in close proximity to the hole or burrow to which the fumes are to be applied, and the open end of the conducting-pipe 18 is introduced into said hole or burrow, after which the bellows is manipulated to draw the fumes from the generator and force the same into the hole or burrow, thereby to drive out and exterminate the gophers or other pests.

Should the fumes and smoke heat the bellows to a dangerous degree, cool air may be admitted tothe bellows by means of a removable closure-plug 19, appliedA to the outer or rear end of the coupling 11, so as to reduce the temperature of thesmoke and fumes, and thereby avoid damaging the bellows.

It will be noted that the blast-pipe of the bellows extends entirely across the upper end of the pipe 7 and fits snugly the rear end of the T-coupling S, whereby little or no fumes will be drawn in through the blast-pipe, and practically all of the fumes will pass through the pipe 9 before 'entering the bellows.

What I claim is- 1. In a fumigator, the combination with a generatingchamber,of a T-shaped dischargepipe connected to the generator, a pipe connected to one end ofthe head of the T-shaped discharge-pipe, a blast device carried by the generator with its discharge end communieating with the other end of the head of the T-shaped discharge-pipe, and a passage leading from said T-shaped discharge-pi pe to the inlet of the blast device.

2. In a fumigator, the combination with a generating-chamber, of an upstanding substantially T-shaped discharge-pipe piercing the top of the chamber near one end thereof, a tube connected to the outer end of the head of the T-shaped discharge-pipe, a bellows supported upon and above the generatingchamber with its blast-pipe projected into the inner end of the head of the T-shaped discharge-pipe, and a pipeleadin'g from the intermediate portion of said T-shapeddisehargepipe to the inlet of the bellows.

8. In a fumigator, the combination with a generating-chamber, of a substantially T- shaped discharge-pipe piercing the top thereof, a pipe leading from one end of the head of theY discharge-pipe, a bellows having its blast-tube inserted into the opposite end of the head, a standard rising from the rear end of the generator and supporting the bellows, the latter having its inlet upon the under side thereof, and a pipe located between the generator and the bellows with one end in communication with an intermediate portion of the T-shaped discharge-pipeand its opposite end connected to the inlet lof the bellows.

4. In a fumigator the combination with a generating-chamberhavingleg-standards,the rear pair of which are extended above the top ot the generator, a discharge-pipe piercing the opposite end of the chamber, and a bellows supported upon the upper projected ends of the rear standards with its blast-tube in communication with the discharge-pipe and 'its inlet in communication with the interior of .the generating-chamber.

5. In a tumigator, the combination with a generating-chamber, of a discharge-pipe, a lateral pipe leading from the discharge-pipe, an outwardly-tapered nozzle projected within the lateral pipe and having its end beveled, a flap-valve at the outer end of the nozzle and lying'over the beveled end, a coupling secured to the outer end of the lateral pipe, and a conducting-pipe secured to the coupling.

6. In a fumigator, the combination with a combined tire-box and generator, of a blast device havingits inletin communication with the interior of the generator, and means for supplying external air to the blast device for cooling the same.

7. In a fumigator, the combination with a combined fire-box and generating-chamber, of a discharge-pipe, a blast device in communication with the discharge-pipe, a passage communicating between the inlet of the blast device and the discharge-pipe, and means carried by said passage for introducing external air thereto to prevent overheating of the blast device.

8. In a fumigator, the combination with a combined tire-box and generator, of a substantially T-shaped discharge-pipe piercing the same, a bellows having its blast-tube Ain communication with one end of the head of the' discharge-pipe, with its inlet upon the inner side of the bellows, a coupling tittedv to the inlet of the bellows, a pipe leading from the intermediate point of the discharge-pipe to the coupling, and a removable closure for the coupling.

9. In a fumigator, the combination with a combined tire-box and generator, of a substantially T shaped discharge pipe rising from one end thereof, a bellows having its blast-tube projected into the rear end of the head'of the discharge-pipe with its inlet upon the under side thereof, means for supporting the rear end of the bellows upon the generator, an inverted substantially T-shaped coupling tted to the inlet of the bellows, a removable closure-plug for the outer end of the IOO coupling, a pipe leading from an intermedizle, and a lexibletnbe connected to the coupro ate portion of the discharge-pipe to the inner ling. f

end of the coupling, a tubular casing fitted In testimony tht I claim the foregoing as to the outer end of the head of the dischargemy own I have hereto affixed my signaturein 1 pipe, an outwardly-tapered nozzle carried the presence of two Witnesses.

within the casing and projected at theI outer GEORGE EDMANy BROWN. end thereof, a ap-valve for the outer end of VWitnesses: the nozzle, a movable coupling fitted to the E. P. TODD,

casing and inclosing the outer end of the nozl B. J. MALLEY. 

